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Gray Tools 66899 striking face box wrench with 45° offset head, black oxide finish

Gray Tools

Gray Tools 66899 3-1/8" Striking Face Box Wrench 12 Point 45° Offset Head

SKU CH-Y4QB-MZZ63

A 12-point box wrench with a 45° offset head and striking face for high-torque fastening

  • 12-point broaching gives a secure fastener fit
  • 45° offset head clears obstructions in tight spaces
  • Large striking block transfers impact force safely
  • Black oxide finish resists corrosion on the job
  • Forged premium tool steel delivers lasting durability

3-1/8 Inch Striking Face Box Wrench

The Gray Tools 66899 is a 3-1/8 inch striking face box wrench with a 12 point, 45° offset head. It is forged from premium tool steel and finished with a corrosion resistant black oxide coating. The large, robust striking block is designed for maximum safety and surface contact when impact force is required. This hand tool suits industrial maintenance and heavy equipment repair tasks.

Suited for heavy fastening work

Mechanics and technicians who need to break loose large, stubborn fasteners using a hammer will find the striking block and offset head beneficial. The 12 point broaching provides a secure fit on compatible hex sizes. Users who require a standard ratcheting wrench for high speed assembly, or those needing drive sizes other than the 3-1/8 inch hex, should select a different tool type.

3-1/8 inch 12 point hex opening

The single specification that decides fit is the 3-1/8 inch, 12 point hex opening. Verify the fastener size exactly matches this dimension before purchase. The wrench meets ANSI standards for dimensional accuracy and is manufactured as a new item. California Proposition 65 warnings apply regarding chemical content.

Highlights

  • 12-point broaching gives a secure fastener fit
  • 45° offset head clears obstructions in tight spaces
  • Large striking block transfers impact force safely
  • Black oxide finish resists corrosion on the job
  • Forged premium tool steel delivers lasting durability

Specifications

BrandGRAY TOOLS

Questions about this item

What does the 12-point drive do when I put it on a fastener?

The 12-point box end fits the 3-1/8" hex from more angles than a 6-point, letting you engage the fastener in tight spots where swing room is limited.

What does the 45° offset head change in use?

The 45° offset angles the handle away from the work surface, giving knuckle clearance and room to strike the large block without hitting surrounding components.

What do I need to check so the 3-1/8" wrench fits my fastener?

Verify the fastener measures exactly 3-1/8" across the flats; the precision-broached 12-point opening is made for that size and a tight, secure fit.

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